ZK: enable button in listcell only for the selected item of a listbox -

in next listbox load elements template:

<listbox model="@load(vm.resaccepted)" selecteditem="@bind(vm.selresaccepted)">   <template name="model">     <listitem>       <listcell label="@load(each.eventname)" />       <listcell label="@load(each.username)" />       <listcell>         <button image="/img/button_mail.png"/>       </listcell>     </listitem>   </template> </listbox> 

my goal enable button of listitem only row user selects.

to this, try

<button disabled="@load(vm.selresaccepted.id=each.id?'false':'true')" /> 

checking if unique field id same of selected element, fails.

any appreciated.

you can use eq equals comparison:

<button disabled="@load(vm.selresaccepted.id eq each.id?'false':'true')" />

or maybe better: disabled when selected item not current item

<button disabled="@load(vm.selresaccepted ne each)" />

here ne not equal